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Fix index out of bound in case of empty snippet

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Lzu Tao 2019-09-02 20:38:40 +07:00
parent 1f9993729b
commit 17d445b66d
1 changed files with 2 additions and 1 deletions
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clippy_lints/src/misc_early.rs
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@ -393,7 +393,8 @@ impl MiscEarlyLints {
// The `line!()` macro is compiler built-in and a special case for these lints. // The `line!()` macro is compiler built-in and a special case for these lints.
let lit_snip = match snippet_opt(cx, lit.span) { let lit_snip = match snippet_opt(cx, lit.span) {
Some(snip) => { Some(snip) => {
if snip.contains('!') { // The snip could be empty in case of expand from procedure macro
if snip.is_empty() || snip.contains('!') {
return; return;
} }
snip snip